CN1942716A

CN1942716A - Ceiling embedded air conditioner

Info

Publication number: CN1942716A
Application number: CNA2006800001629A
Authority: CN
Inventors: 池田尚史; 枝吉敦史; 铃木一隆
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2005-02-24
Filing date: 2006-02-03
Publication date: 2007-04-04
Anticipated expiration: 2026-02-03
Also published as: EP2390590B1; EP2273207A3; EP2273207A2; EP1873461A1; JP2006266664A; ES2623606T3; CN101907325A; CN101907325B; EP2390590A2; JP4684085B2; CN1942716B; EP1873461A4; WO2006090564A1; EP2390590A3; EP2273207B1; ES2623875T3; EP1873461B1

Abstract

A ceiling embedded air conditioner in which motor cooling efficiency is improved, enabling prevention of motor failure to achieve high reliability, and which generates low noise. A motor side airflow path (3f) is formed on the motor side of a downwardly projecting hub (3c), between the hub (3c) and a motor (4), the hub (3c) covering the motor (4) and having fixed on it a rotating shaft (4a) of the motor (4). An airflow guiding cover (18) is provided to guide air that flows into the motor side airflow path (3f) from an interspace formed between a housing top plate (1b) and a main plate (3b). The airflow guiding cover (18) has a peripheral surface section (18c) extended downward from the main plate (3b) side, and is constructed such that a lower end opening (18b) of the peripheral surface section (18c) is positioned below a lower end surface (4b) of the motor (4). The hub (3c) has openings (3d) for allowing air to flow out into an in-fan airflow path (3e), the air being air that flows from the interspace into the motor side airflow path (3f) and then flows into an interspace between the airflow guiding cover (18) and the hub (3c) after flowing out from the lower end opening (18b) in the airflow guiding cover (18).

Description

Ceiling embedded air conditioner

Technical field

The present invention relates to ceiling embedded air conditioner, the device construction that particularly is used to improve the motor cooling performance and realizes low noiseization.

Background technology

Existing ceiling embedded air conditioner is provided with: the ceiling embedded air conditioner body with framework top board; Be arranged in the ceiling embedded air conditioner body and make the rotating shaft motor vertical with the framework top board; The lining that is convex downwards of the rotating shaft of covering motor and fixing described motor (the Ha Block, hub); Extend opposed to each other with top board around the upper open face of lining, with the mainboard that many pieces of blades are installed facing to the face of the opposite side of face of framework top board; Constitute the shell of the guiding stream of described blade opposed to each other with mainboard; Have by described lining, described mainboard and described shell constitute and be formed on described lining described motor-side the motor-side wind path and be formed on the inner wind path of fan of its opposition side, the turbofan (prior art 1) that will discharge via the inner wind path of described fan from described shell-side inhaled air.In this ceiling embedded air conditioner, the portion of air that to discharge from turbofan imports the motor-side wind path of lining inboard via the gap of framework top board and mainboard and motor is cooled off, with this cooled air near the row of the open pore the motor side that is located at lining to the inner wind path of the fan in the lining outside.

In addition, in the structure of above-mentioned ceiling embedded air conditioner, the position of the open pore of lining is not located near the motor side, and be provided in a side of near lining downside (fixed part of motor axis of rotation and lining), simultaneously, the auxiliary blower (prior art 2) (with reference to patent documentation 1) that has a plurality of blades in the outside of lining with the mode setting that covers the open lower side hole.In this ceiling embedded air conditioner, owing to be provided with auxiliary blower, so increased the motor ambient air amount of flowing through, improved the cooling rate of motor, simultaneously, owing to cover the open lower side hole with auxiliary blower, so reduced the motor operation sound that spills from the open lower side hole.

In addition, in the structure of above-mentioned prior art 2, the open pore that substitutes the open lower side hole and will be located at lining is as near the lateral opening hole the motor side, simultaneously, substitute described auxiliary blower and be provided with roughly in the mode that covers the lateral opening hole in the outside of lining and form the auxiliary lining (prior art 3) (with reference to patent documentation 2) that is convex downwards along lining.

Patent documentation 1: No. 3270567 communique of Japan's special permission

Patent documentation 2: No. 3275474 communique of Japan's special permission

In described prior art 1, to the inner wind path of fan, but at this moment, open pore is discharged to the inner wind path of fan with the jet flow shape to the air behind the cooling motor from the side from the lateral opening orifice flow of lining.Therefore, thus the problem that exists blade in the jet flow turbulent flow, noise to be worsened by the change that is under pressure.In addition, the mobile inlet flow with turbofan of the jet flow shape of open pore outflow from the side interferes.As a result, reduce, have air-supply degradation in efficiency, the problem that worsens of the level of noise of air quantity relatively from the flow of the discharge currents of the actual discharge of turbofan.In addition, because open pore is located at the side of lining, so wind can not flow to the rear surface of motor fully, cooling motor effectively, motor might cause damage because of heating.

In addition, in prior art 2 and prior art 3, cover the open pore that is located on the lining, but be not to cover whole lining, and just cover a part with auxiliary blower or auxiliary lining.Therefore, same with above-mentioned prior art 1, the inlet flow that has the discharge currents that flows out from open pore and a turbofan interferes and makes possible that noise worsens.

In addition, there are the following problems, promptly, when transporting the air conditioner body with truck etc., because the vibration when this transports makes the turbofan swing, the framework top board of the outer circumference end of turbofan and air conditioner body collides with a way of contact, and the impact of might stress concentrating can make turbofan damage when the worst, makes reliability decrease.

Summary of the invention

Of the present inventionly propose, prevent that with providing the low ceiling embedded air conditioner of the reliability height of motor failure and noise is as the present invention's first purpose by improving the motor cooling effectiveness in order to address the above problem.

The high ceiling embedded air conditioner of damage, product reliability of fan when the present invention's second purpose provides and can prevent that product from transporting.

Ceiling embedded air conditioner of the present invention has: the ceiling embedded air conditioner body that (a) has the framework top board; (b) be arranged in the ceiling embedded air conditioner body, make the rotating shaft motor vertical with the framework top board; (c) turbofan, it has the lining that is convex downwards of the rotating shaft that covers motor and fixing motor, extend facing to top board around the upper open face of lining and with the face of the opposition side of opposed of framework top board the mainboard, and opposed and constitute the shell of the guiding stream of blade with mainboard of multi-disc blade is being installed, the inner wind path discharge of fan that this turbofan will form by the opposition side in the motor-side of lining from described shell-side inhaled air; (d) wind scooper, it is located at the motor-side of lining, and motor between form the motor-side wind path, will flow into the air guide motor of motor-side wind path from the gap that forms between framework top board and the mainboard.Wind scooper has from the week that mainboard side extends facial downwards, and the height and position that forms facial lower ending opening of week is positioned at the position of more leaning on the below than the rear surface of motor.Lining has a plurality of open pores that make the inner wind path of air flow fan, and this air is the air that flows out the gap of back inflow wind scooper and lining from gap inflow motor-side wind path from the lower ending opening of wind scooper.

Ceiling embedded air conditioner of the present invention has: the ceiling embedded air conditioner body that (a) has the framework top board; (b) be arranged on the turbofan of blowing in the ceiling embedded air conditioner body; (c) be arranged in the ceiling embedded air conditioner body and rotating shaft and vertical being used to of framework top board drive the motor of turbofan; (d) surround the upright heat exchanger that is provided with in turbofan ground; (e) in the framework top board, be equivalent to be radial a plurality of reinforcements from outer peripheral portion in the heat exchanger area inside to the side-prominent formation of body interior with the opposed zone of motor; (f) be arranged on the top board side insulation of framework top board inboard.Top board side insulation forms whole roughly along the raised face of each reinforcement, and each reinforcement part or all formation of respectively radiating configuring area in addition along the framework top board, by the part that constitutes along the radiation configuring area, the wind-guiding road is disposed in the radiation of a part of steerable motor of the discharge air-flow that formation will be discharged from turbofan.

Ceiling embedded air conditioner of the present invention has: the ceiling embedded air conditioner body that (a) has the framework top board; (b) be arranged on the turbofan of blowing in the ceiling embedded air conditioner body; (c) motor of driving turbofan; (d) surround the upright heat exchanger that is provided with in turbofan ground; (e) in the framework top board, be equivalent to be radial a plurality of reinforcements from outer peripheral portion in the heat exchanger area inside to the side-prominent formation of body exterior with the opposed zone of motor; (f) be arranged on the top board side insulation of framework top board inboard.Top board side insulation forms whole roughly along each reinforcement face in addition, and each reinforcement part or all formation partly along the framework top board, by the part that partly forms along each reinforcement, the radiation configuration wind-guiding road of a part of steerable motor of the discharge air-flow that formation will be discharged from turbofan.

The present invention is owing to be provided with wind scooper in the inboard of lining, and the height and position that makes this wind scooper form facial lower ending opening of week is positioned at the below of motor rear surface, and institute is so that the air of inflow motor-side wind path can be directed to the rear surface of motor effectively.Thus, integral surface that can cooling motor.As a result, can obtain the high ceiling embedded air conditioner of reliability that the motor cooling effectiveness was improved, can prevents the motor failure that causes because of heating.

In addition, owing to will be located near all facial mainboards of lining, interfere so can prevent the air and the fan inlet flow that flow to the inner wind path of fan from open pore to the open pore that the inner wind path of fan is discharged air.Therefore, can suppress the shear turbulence of fan inlet flow, reduce owing to blade pass is crossed the noise that turbulent flow forms.In addition, can prevent to follow because of interfering the noise of the air-supply degradation in efficiency generation that causes to increase with the fan inlet flow.

In addition and since lining in fact integral body be dual structure, and open pore is located near the mainboard of week face of lining, so as mentioned above, prolonged the distance from the motor-side wind path of lining to fan inside wind path, makes sound attenuation.As a result, can reduce motor operation sound sewing such as the electromagnetic anomaly sound that produces from motor or bearing rotation sound to the outside.In addition, can obtain low noise and give the occupant ceiling embedded air conditioner with a home from home.

In addition, same with noise alleviation, owing to weakened the flow velocity that flows to the air of the inner wind path of fan from open pore,, prevent to follow the noise of blowing degradation in efficiency and producing to increase so can prevent the reduction of the flow of fan discharge currents effectively.In addition, utilize the effect of the flow prevent to reduce the fan discharge currents, can also fully guarantee to be used for the air capacity that cooling motor is used, cooling motor effectively.

In addition, the present invention is provided with reinforcement on the framework top board, simultaneously, be used in the radiation that inboard top board side insulation that is provided with of framework top board and reinforcement form a part of steerable motor of the discharge air-flow that will discharge from turbofan and dispose the wind-guiding road, so, not only can increase the intensity of framework top board and realize framework top board 1b thin-walled property and lightweight by reinforcement, but also can increase the air mass flow that is sent to motor by radiation configuration wind-guiding road, cooling effectiveness can be improved, and the breakage of motor can be prevented.

Description of drawings

Fig. 1 relates to the stereoscopic figure of the ceiling embedded air conditioner of embodiment of the present invention 1;

Fig. 2 is the profilograph of the air conditioner inside of presentation graphs 1;

Fig. 3 is the air conditioner inside of presentation graphs 1, see the horizontal sectional drawing of the X-X line of Fig. 2 from the top board side;

Fig. 4 is near the profile the turbofan 3 of Fig. 2;

Fig. 5 is the stereogram (its 1) of turbofan 3;

Fig. 6 is the stereogram (its 2) of turbofan 3;

Fig. 7 is the stereogram of wind scooper 18;

Fig. 8 is the minimum clearance figure of the relation of k and motor cooling effectiveness at interval of expression wind scooper 18 and motor 4;

Fig. 9 is the figure of the relation of expression G4/G1 (ratio of total aperture area G4 and circular opening area G1) and motor cooling effectiveness;

Figure 10 is the figure of the relation of expression G4/G5 (ratio of turbofan outlet area G5 and total aperture area G4) and level of noise and motor cooling effectiveness;

Frequency characteristic figure when Figure 11 is an operation of air-conditioner of the present invention;

Air output when Figure 12 is an operation of air-conditioner of the present invention and the graph of a relation of noise;

Figure 13 is near the amplification profile expression wind scooper 18 another routine turbofan 3;

Figure 14 is the profilograph that expression relates to the ceiling embedded air conditioner inside of embodiment of the present invention 2;

Figure 15 is the inside of the air conditioner body 1 of expression Figure 14, the horizontal sectional drawing of seeing from the top board side;

Figure 16 is near the enlarged drawing the turbofan 3 of Figure 14;

Figure 17 is the schematic diagram when the fans such as occasion 3 that transport turbofan 3 contact with top board side insulation 1e for a spot wobble with the fixed part 3h of lining 3c and motor axis of rotation 4a;

Figure 18 is a stereogram of seeing insulation 1c from the suitable portion of fan side;

Figure 19 is expression for the variation of the level of noise of the E1/D1 ratio of the clearance D 1 of the short transverse of top board side insulation 1e and mainboard 3b (the minimum clearance E1 between rectification part 1g and the mainboard 3b with) when the same air output and the figure of motor cooling effectiveness;

Figure 20 is the stereogram of another shape example of expression rectification part 1g;

Figure 21 is the profilograph of another structure example of expression rectification part 1g;

Figure 22 is the profilograph that expression relates to the ceiling embedded air conditioner inside of present embodiment 3;

Figure 23 is that the tilted shape of side 1h is the stereogram of polygonal cowling panel 19;

Figure 24 is that the tilted shape of side 1h is the stereogram of the cowling panel 19 of circular cone shape;

Figure 25 is the profilograph that expression relates to the ceiling embedded air conditioner inside of present embodiment 4;

Figure 26 is the Z-Z line horizontal sectional drawing of Figure 25;

Figure 27 is that the S of Figure 25 is to the top board outside drawing of looking;

Figure 28 is near the partial enlarged drawing the turbofan 3 of Figure 25;

Figure 29 is the V-V line sectional stereogram of Figure 26;

Figure 30 is the part section side view of motor 4;

Figure 31 is arranged on the schematic diagram that substrate is used in motor 4 interior drivings;

Figure 32 is expression corresponding to the test experience result's of the motor table surface temperature of the position relation of the radiation of Figure 25 configuration wind-guiding road 1k and turbofan 3 and level of noise figure;

Figure 33 is the figure that sees the framework top board 1b of the ceiling embedded air conditioner that relates to embodiment of the present invention 5 from top board side insulation 1eb side;

Figure 34 relates to the outward appearance plane of framework top board 1b of the ceiling embedded air conditioner of embodiment of the present invention 5;

Figure 35 is the sectional stereogram of the V-V line of Figure 33.

The specific embodiment

Embodiment 1

Below, the ceiling embedded air conditioner that relates to embodiment of the present invention 1 is described referring to figs. 1 through Fig. 7.

Fig. 1 is the stereoscopic figure of air conditioner of the present invention; Fig. 2 is the profilograph of the air conditioner inside of presentation graphs 1; Fig. 3 is air conditioner body 1 inside of presentation graphs 1, the horizontal sectional drawing of the X-X line of Fig. 2 when the top board side is watched; Fig. 4 is near the profile the turbofan 3 of Fig. 2; Fig. 5 is the stereogram that is loaded in the turbofan 3 on the ceiling embedded air conditioner 1 of the present invention; Fig. 6 is the stereogram of the turbofan 3 turned upside down states of Fig. 5; Fig. 7 is the stereogram that is configured in the wind scooper 18 on the turbofan 3.

In Fig. 1, ceiling embedded air conditioner body 1 is embedded in the ceiling in room 15 with the state of the roughly tetragonal decorative panel 2 that can see the below that is arranged on ceiling embedded air conditioner body 1.Near the central authorities of decorative panel 2, have the roughly tetragonal suction grid 2a that is communicated with the air suction inlet 11a (with reference to Fig. 2) of ceiling embedded air conditioner body 1, and the plate outlet 2b that is communicated with body outlet 16a (with reference to Fig. 2), and then be provided with wind direction blade 2c and constitute ceiling embedded air conditioner at each plate outlet 2b along each limit formation of decorative panel 2.

In addition, as shown in Figures 2 and 3, the framework of air conditioner body 1 is formed by framework side plate 1a and the framework top board 1b that is installed in the part that is impaled by framework side plate 1a, and framework side plate 1a and framework top board 1b are made of metal plate component.In addition, on the face of air conditioner body 1 inboard of at least a portion of framework side plate 1a and framework top board 1b, be pasted with insulation 1c, constitute the wind path wall.Inside at air conditioner body 1 has: be configured to the rotating shaft 4a motor 4 vertical with framework top board 1b; Has centrifugal blower by the turbofan 3 of motor 4 rotating drive; Surround the turbofan 3 upright heat exchangers that are roughly the C font 6 that are provided with.

Be provided with the discharge plate (De レ Application パ Application, drain pan) 12 that constitutes with expanded material in the bottom of heat exchanger 6, and place the electric component case 13 of electronic product such as control substrate.In addition, two end 6a that roughly are the heat exchanger 6 of C font are connected by heat exchanger connecting plate 7, form roughly quadrangle as a whole.In the outside of heat exchanger connecting plate 7 (framework side plate 1a side), as shown in Figure 3, and form the gap between the side plate side insulation 1d, this gap up and down constitute pipe arrangement parking space 10 by framework top board 1b and discharge plate 12 sealings.Configuration is connected with heat pipe 6b that an end 6a from two end 6a stretches out in this pipe arrangement parking space 10 collector 8 and distributor 9.

Centrifugal blower is made of turbofan 3 and the bellmouth 5 that forms the suction wind path 23a that leads to turbofan 3.Turbofan 3 has: the lining 3c that is convex downwards that covers the rotating shaft 4a of motor 4 and fixing motor 4; Around the upper open face of lining 3c, extend, the mainboard 3b of the roughly ring-type of many pieces of blade 3a be installed with the face of the opposite side of face that faces toward framework top board 1b facing to framework top board 1b; Opposed and constitute shell 3g with mainboard 3b to the guiding stream of described blade 3a.The upper end of lining 3c and mainboard 3b form one, and the lower end is fixed on the rotating shaft 4a of motor 4.At this, lining 3c constitutes forms as one all facial 3ca, planar portions 3cb and cylindrical portion 3cc; Facial 3ca of week from the interior perimembranous of mainboard 3b downwards undergauge be the taper barrel of hollow; Planar portions 3cb extends to motor drive shaft 4a from the lower ending opening of facial 3ca of week; Cylindrical portion 3cc extends from the interior circumferential motor drive shaft 4a direction of planar portions 3cb.In addition, on facial 3ca of week, the position near the concentric circles that is positioned at the mainboard 3b forms a plurality of open pore 3d.The lining 3c of Gou Chenging is fixed on the motor axis of rotation 4a with cylindrical portion 3cc like this, and under this stationary state, the size of design lining 3c makes and lining 3c forms the mainboard 3b of one and the interval that the gap E1 between the top board side insulation 1e has regulation.

And then, in the inboard (motor 4 sides) of the lining 3c of turbofan 3 wind scooper 18 is set.Wind scooper 18 and motor 4 between form motor-side wind path 3f, to flow into the air guide motor 4 of motor-side wind path f from the gap E1 that between framework top board 1b and mainboard 3b, forms, as shown in Figure 7, all facial 18c by the taper barrel of the flange part 18a of ring-type and hollow constitutes.Facial 18c of this in week in the flange part 18a perimembranous to the opening 18b undergauge of lower end so that the sectional area of motor-side wind path 3f diminish.Facial 18c of week forms roughly the identical inclination of all facial lining 3ca with lining 3c, and the interval that is configured to have regulation of the gap E2 between all facial 3ca of lining 3c.In addition, the height and position that wind scooper 18 forms the lower ending opening 18b of its all facial 18c is positioned at rear surface 4b than motor 4 more by the below, forms to make the air that flows into motor-side wind path 3f import the formation of whole motor 4.The wind scooper 18 of this formation is made of the good metal parts of heat such as aluminium or electroplating steel plate conduction, and is installed on the mainboard 3b by suspensions such as welding by flange part 18a, rotates integratedly by the rotation and the turbofan 3 of motor 4.

Below, the action during to the operation of the ceiling embedded air conditioner of above formation describes.

During operation of air-conditioner, motor 4 is driven, and when turbofan 3 was rotated by arrow A (with reference to Fig. 3,5,6), the air in room 15 was inhaled into as shown by arrow B like that from sucking grid 2a, after filter 14 is removed dust etc., sucks turbofan 3 by bellmouth 5.Thereafter, the air C1 that discharges from the outlet 3i of turbofan 3 is heated or cooled in by heat exchanger 6, by drive by not shown sliding-vane motor the wind direction blade 2c control air-flow direction that rotates simultaneously slave plate outlet 2b row carry out air conditioning to room 15.During refrigeration, the condensed water that generates with the air in heat exchanger condensation rooms 15 6 is discharged to the outside of air conditioner body 1 by emptying pump 17.

In addition, near the enlarged drawing the turbofan 3 of Fig. 4, the air-flow B that sucks turbofan 3 becomes air-flow C1 and air-flow C2.Air-flow C1 flows to heat exchanger 6 from turbofan 3; Air-flow C2 is by the gap E1 between mainboard 3b and the top board side insulation 1e, flow into motor-side wind path 3f, around motor 4, flow, through behind the lower ending opening 18b of wind scooper 18, gap E2 through lining 3c and wind scooper 18 arranges to the inner wind path 3e of fan from open pore 3d, collaborates with fan inlet flow B.

In this air-flow C2, at first, the air that flows into the motor-side wind path 3f (motor 4 sides) of wind scooper 18 inboards by gap E1 becomes towards the air-flow of lower ending opening 18b.At this, because the height and position that wind scooper 18 forms the lower ending opening 18b of its all facial 18c is positioned at rear surface than motor 4 more by the below, so can will flow into the rear surface 4b of the air guide motor 4 of motor-side wind path 3f effectively.Thus, can dispel the heat to the coil temperature or the element heat of motor 4 inside in whole surface that can cooling motor 4.

Afterwards, cooled off of the lower ending opening 18b outflow of the air on motor 4 surfaces, after the planar portions 3cb of lining 3c contacts,, discharged to the inner wind path 3e of fan from open pore 3d by gap E2 guiding top from wind scooper 18.At this,, interfere so can prevent the air and the fan inlet flow B that flow to the inner wind path 3e of fan from open pore 3d because open pore 3d is located near the mainboard 3b side (the mainboard 3b) of all facial 3ca of lining 3c.Therefore, the shear turbulence of fan inlet flow B can be suppressed, noise in turbulent flow can be reduced through producing because of blade 3a.In addition, can prevent along with interfering the noise of the air-supply degradation in efficiency that causes to increase with fan inlet flow B.

In addition, because lining 3c essence on the whole is a dual structure, and open pore 3d is located at the mainboard 3b side of all facial 3ca of lining 3c, so near the lower occasion of height and position that the open pore of discharging the air of lining inboard to the outside when being one deck with lining is located at the motor side or a lining part is provided with open pore during for dual structure is compared, and is longer to the wind path of fan inside wind path 3e from the motor-side wind path 3f of lining 3c.Therefore, noise is reduced, operation sound such as electromagnetic anomaly sound that reduction motor 4 sends or bearing rotation sound.

In addition, reduce equally with noise, the flow velocity of the air that flows out to the inner wind path 3e of fan from open pore 3d is also decayed.Like this, can prevent from conscientiously can prevent the noise increase that produces along with the air-supply degradation in efficiency because of reducing to the flow that the air and the fan inlet flow B of the inner wind path 3e outflow of fan interfere the fan discharge currents C1 that causes from open pore 3d.In addition, the effect of utilizing the flow prevent fan discharge currents C1 to reduce can fully be guaranteed the air capacity of motor cooling usefulness, also cooling motor 4 effectively.

Secondly, with following Fig. 8 to Figure 12 the size design of the each several part of the turbofan 3 of the cooling effect that can give full play to motor 4 or noise reduction effect is described.The minimum clearance of setting wind scooper 18 and motor 4 lower ends is the circular opening area G1 that is spaced apart E2 (aperture area when wind scooper 18 is cut into ring-type with lining 3c in the plane vertical with facial 3ca of week), the total aperture area G4 (the total area of each open pore 3d) of open pore 3d of area G5, wind scooper 18 and the lining 3c of the outlet 3i of (on the surperficial sagging vertical line of all facial 18c from motor 4 lower ends towards wind scooper 18, the distance on the lower end of motor 4 and the surface of all facial 18c) k, turbofan 3 at interval.

Fig. 8 is the minimum clearance figure of the relation of k and motor cooling effectiveness at interval of expression wind scooper 18 and motor 4 lower ends.Motor temperature when hypothesis has open pore 3d is h1, and when the motor temperature when not having open pore 3d was h2, the motor cooling effectiveness was the ratio of (h1-h2) and h1.

According to Fig. 8 as can be known, preferably, with minimum clearance at interval k be set at, wind scooper 18 and becomes below the 25mm that rapid deterioration is inclined at the motor cooling effectiveness not with more than the 8mm that motor 4 conflicts when occasions such as conveyings are starting point generation yaw with motor axis of rotation 4a.According to this size, sufficient air can be moving at the motor table surface current, can obtain stable motor cooling effectiveness, can also prevent because the breakage that the motor heating causes.

Fig. 9 is the figure of the relation of expression G4/G1 (ratio of total aperture area G4 and circular opening area G1) and motor cooling effectiveness.

According to Fig. 9, if G4/G1 is more than 40%, then can be not excessive in the flowing resistance of gap E2 on the stream of the open pore 3d of lining 3c from wind scooper 18 and lining 3c, the air minimally flows, can stablize and improve the motor cooling effectiveness, can prevent because the breakage that motor 4 heatings cause.

Figure 10 (a) is the figure of expression G4/G5 (ratio of turbofan outlet area G5 and total aperture area G4) and level of noise relation; Figure 10 (b) is the figure of the relation of expression G4/G5 (ratio of turbofan outlet area G5 and total aperture area G4) and motor cooling effectiveness.

According to Figure 10 (a) as can be known, if G4/G5 is below 10%, then can not interfere with inlet flow B from the discharge currents of open pore 3d, level of noise is low.In addition, according to Figure 10 (b) as can be known, if G4/G5 is more than 0.5%, then the motor cooling effectiveness just can obtain to stablize.Thus, be more than 0.5% and below 10% if set G4/G5, just can obtain low noise and the also stable effect of motor cooling effectiveness.

By above such size design that guarantees the relation of (wind scooper 18 and motor 4, wind scooper 18 and lining 3c, open pore 3d and fan outlet 3i) between each structure division, can reduce low noise, prevent the breakage that the heating of motor 4 causes, can obtain quiet and high-quality ceiling embedded air conditioner.

Frequency characteristic figure when Figure 11 is an air-conditioner operation of the present invention, the comparative result of expression and existing product.Transverse axis is represented frequency, and the longitudinal axis is represented level of noise SPL.Experimental result is structure of the present invention and near existing structure (lining is one deck structure, and it will be located at the motor side of lining to the open pore of the air of discharge lining inboard outside the lining) result relatively.Identifiable according to Figure 11 is to reduce the electromagnetic anomaly sound that sent by motor 4 or bearing rotation sound etc.

Air output when Figure 12 is an air-conditioner operation of the present invention and the graph of a relation of noise, the comparative result of expression and existing product.Transverse axis is represented air output, and the longitudinal axis is represented level of noise.

Identifiablely according to Figure 12 be: when air output is identical, (lining is one deck structure for structure of the present invention and existing structure, it will be located near the motor side of lining to the open pore of the air of discharge lining inboard outside the lining) compare, noise is reduced.

Like this, according to present embodiment 1, in the inboard of lining 3c (motor 4 sides) wind scooper 18 is set, the below forms this wind scooper 18 like that because the height and position of the lower ending opening 18b of all facial 18c is positioned at more than the rear surface 4b of motor 4, so can make the air that flow into motor-side wind path 3f be directed to the rear surface 4b of motor 4 really.Thus, whole surface that can cooling motor 4 can make the coil temperature of motor 4 inside or element heat be dispelled the heat.As a result, can obtain the motor cooling effectiveness is improved, can prevents because the high ceiling embedded air conditioner of fault, reliability of the motor that heating produces.

In addition, owing to will in the inner wind path 3e of fan, discharge the mainboard 3b side that the open pore 3d of air is located at all facial 3ca of lining 3c, so, can prevent to interfere to air and the fan inlet flow B that the inner wind path 3e of fan flows out from open pore 3d.Therefore, the shear turbulence of fan inlet flow B can be suppressed, noise in turbulent flow can be reduced through producing because of wing 3a.In addition, can prevent to be accompanied by to interfere with fan inlet flow B is that the noise of air-supply degradation in efficiency of cause increases phenomenon.

In addition, lining 3c integral body comes down to dual structure, and because open pore 3d is located at the mainboard 3b side of all facial 3ca of lining 3c, so as mentioned above, the distance from the motor-side wind path 3f of lining 3c to the inner wind path 3e of fan is extended, sound attenuation.As a result, be that a weight structure or part are compared for the existing apparatus of dual structure with lining, the sound that can reduce motor runnings such as the electromagnetic anomaly sound that sent by motor 4 or bearing rotation sound is to external leaks.As a result, can obtain noise low, make the occupant can obtain the ceiling embedded air conditioner of a home from home.

In addition, the same with noise alleviation, also decay to the flow velocity of the air of the inner wind path 3e outflow of fan from open pore 3d.Like this, can prevent from really to interfere with fan inlet flow B and the flow of the fan discharge currents C1 that causes reduces, can prevent to follow the noise increase of air-supply degradation in efficiency from the air that open pore 3d flows out to the inner wind path 3e of fan.In addition, the effect of utilizing the flow prevent fan discharge currents C1 to reduce can fully be guaranteed motor tempering air amount, also cooling motor 4 effectively.

In addition, because all facial 18c of wind scooper 18 is made to become the hollow cone tubular that makes the mode necking down that motor-side wind path 3f area of section diminishes with the opening 18b to the lower end, so the stream of the air in the motor-side wind path 3f is along with rising to lower ending opening 18b.As a result, can cool off effectively on the whole to the existing rear surface 4b that cools off inadequate motor 4 from the top of motor 4.

In addition, by designing each structure division, make that minimum clearance interval k is below the above 25mm of 8mm, and G4/G1 is more than 40%, and then G4/G5 is more than 0.5% and below 10%, thereby can obtain low noise, can prevent because breakage, peace and quiet and the high-quality ceiling embedded air conditioner that motor 4 heatings cause.

And then, because wind scooper 18 is made of high hardwares of heat conductivity such as aluminium or steel plating plates, so the heat of the heating air around the motor transmits to wind scooper 18, in addition, because wind scooper 18 and turbofan 3 unitary rotation, do not compare so do not rotate such situation about being provided with hypothesis wind scooper 18, the air capacity that limit and wind scooper 18 surperficial contact edges pass through increases, and heat radiation obtains promoting.Like this, motor 4 just can obtain higher cooling effect.As a result, can obtain further to prevent because the high ceiling embedded air conditioner of fault, reliability that motor 4 heatings cause.

In addition, for the open pore on the fixed part that is located at motor 4 is the open pore 3d of lining 3c, owing to its summit side that is not located at circular cone shape is provided in a side of base side (being mainboard 3b side), so, guarantee that with open pore 3d near the situation side below the existing lining or lower end compares with same area, because the area of the parts (lining 3c) between adjacent open pore 3d increases, so can obtain the higher intensity of relative motor 4 torques.

Present embodiment 1 illustration the situation of all facial 3ca almost parallel of all facial 18c of wind scooper 18 and lining 3c, but also can make following structure, promptly as shown in figure 13, make the outer peripheral face bending of all facial 18c of wind scooper 18, cylindric 18d is set along motor 4 sides.In the situation of this shape, because the air that can make motor 4 sides that flow into wind scooper 18 is positively along the surface of motor 4, so can further improve the motor cooling effectiveness.In addition, with above-mentioned the same, can obtain reducing electromagnetic anomaly sound or bearing rotation sound etc. quietly, can prevent the high ceiling embedded air conditioner of reliability of motor 4 breakages.

Embodiment 2

Below, explanation relates to the ceiling embedded air conditioner of embodiment of the present invention 2 with reference to Figure 14 to Figure 19.

Figure 14 is the profilograph that expression relates to the ceiling embedded air conditioner inside of embodiment of the present invention 2; Figure 15 is the horizontal sectional drawing of seeing from top board of air conditioner body 1 inside of expression Figure 14; Figure 16 is near the enlarged drawing the turbofan 3 of Figure 14; Figure 17 is the schematic diagram when the fans such as occasion 3 that transport turbofan 3 contact with top board side insulation 1e for a spot wobble with the fixing point of lining 3c and motor axis of rotation 4a.In these figure, to giving identical Reference numeral and omit its explanation to the identical part of embodiment shown in Figure 41 with Fig. 1.

Embodiment 2 is in the top board side insulation 1e of embodiment shown in Figure 21, in the quite regional 1f of fan mainboard of the ring-type of mainboard 3b, form restriction from the rectification part 1g of gap E1 to the flow of motor 4 side inflows, thus, reduction to the flow that the inner wind path 3e of fan discharges, realizes low noiseization from open pore 3d.This rectification part 1g is integrally formed by top board side insulation 1e.

Below, with reference to Figure 16 to Figure 18 the shape of rectification part 1g is specifically described.Figure 18 is the stereogram of seeing from the suitable portion of fan side of insulation 1c.

Rectification part 1g forms roughly ring-type, constitutes like that along with the distance from the short transverse of inside perimembranous side of peripheral part and mainboard 3b shortens.In addition, the clearance D 1 of the short transverse of the minimum clearance E1 of rectification part 1g and mainboard 3b and mainboard 3b and top board side insulation 1e forms the relation of regulation.In addition, the side 1h of rectification part 1g is formed on when occasion turbofan 3 such as conveying contacts with rectification part 1g for a spot wobble with the fixed part 3h of lining 3c and motor axis of rotation 4a and does not contact such inclination with the outer peripheral edges origination point of turbofan 3 as shown in figure 17.And the shape of this inclined side 1h particularly as shown in figure 18, is to contact with the outer peripheral edges line of turbofan 3 or polygon that the face contact is such.

Owing to be provided with the rectification part 1g of such formation, can suppress to discharge and the air-flow C2 of gap E1 direction counter-rotating between mainboard 3b and top board side insulation 1e flows into towards motor-side wind path 3f too much from the outlet 3i of turbofan 3.Therefore, can reduce the air mass flow that flows out to the inner wind path 3e of fan from open pore 3d, inhibition can realize low noiseization to the interference of fan inlet flow B and the generation of shear turbulence.

Secondly, with Figure 19 the cooling effect that can give full play to motor 4 and the size design that reduces the rectification part 1g of noise result are described.

Figure 19 (a) expression is for the variation of E1/D1 (the minimum clearance E1 between rectification part 1g and mainboard 3b and the ratio of the clearance D 1 of the short transverse of top board side insulation 1e and mainboard 3b) level of noise when the identical air output, and Figure 19 (b) expression is for the motor cooling effectiveness of E1/D1 when the identical air output.

If E1/D1 is too small, then the flowing resistance of clearance D 1 is big, so air is mobile and become low noise shown in Figure 19 (a), but then, owing to reduce and abundant cooling motor 4 motor cooling effectiveness variation shown in Figure 19 (b) to the influx on motor 4 surfaces.Otherwise if E1/D1 is excessive, air flows to clearance D 1 too much, and noise becomes big shown in Figure 19 (a), but then, because air flows to motor 4 surfaces fully, so the cooling effectiveness of motor 4 is improved.Like this, take into account the effect of the cooling effect and the reduction noise of motor 4, in this example E1/D1 is set at 0.3～0.7.Thus, cooling effectiveness is to improving, and can prevent because the fault that the heating of motor 4 causes, and then can also reduce level of noise.

According to such embodiment 2, can receive the action effect identical with above-mentioned embodiment 1, simultaneously, owing to be provided with the rectification part 1g of above-mentioned shape, can suppress from the outlet 3i of turbofan 3 discharge and the air-flow C2 of gap E1 direction counter-rotating between mainboard 3b and top board side insulation 1e too much to motor 4 side inflows.Therefore, can reduce the air mass flow that flows out to the inner wind path 3e of fan from open pore 3d, inhibition can realize low noiseization to the interference of fan inlet flow B and the generation of shear turbulence.

In addition, even the mainboard 3b of contingency turbofan 3 contacts with top board side insulation 1e when conveying waits, owing to be not the such some contact of prior art, but the contact of line shown in J among Figure 17 or face, so, can avoid the stress that impacts generation and concentrate, can prevent the breakage of turbofan 3 to fan mainboard 3b.In addition, because the insulation 1c of general formation wind path, can integrally formed rectification part 1g when insulation 1c is shaped, the advantage that can omit installation procedure so also have the parts that needn't constitute other.As a result, can obtain and to prevent motor failure, reliability height and low noise, can make the occupant obtain the ceiling embedded air conditioner of a home from home by improving the motor cooling effectiveness.

In addition, be 0.3～0.7 owing to set E1/D1, so the ceiling embedded air conditioner that can obtain having both the cooling effect of motor 4 and reduce the effect of noise.

Be illustrated though the rectification part 1g when this example is polygon with the side view is an example, be not limited to this,, also can form as shown in Figure 20 as long as formation contacts with the outer peripheral edges line of turbofan 3 or the shape of face contact.

Figure 20 is the stereogram of another shape example of expression rectification part 1g, and this example represents to make the side 1h of rectification part 1g to constitute the situation of the tilted shape of circular cone shape.Even in this situation, also become line to contact with mainboard 3b at side 1h at least, concentrate so can avoid the stress that impacts generation to mainboard 3b, can prevent the breakage of turbofan 3.In addition, when making this shape, if also with above-mentioned the same E1/D1=0.3～0.7 of setting, then can obtain having both the cooling effect of motor 4 and reduce the ceiling embedded air conditioner of the effect of noise.

In addition, this example is that example is illustrated with the situation that is made of rectification part 1g top board side insulation 1e, constitutes rectification part 1g but the quite regional 1f of fan mainboard of framework top board 1b partly is out of shape.At this moment, even do not have top board side insulation 1e in the wind path inside of top board 1b, also can be integrally formed with framework top board 1b, so can reduce cost.

Embodiment 3

Below, with Figure 22 and Figure 23 the ceiling embedded air conditioner that relates to embodiment of the present invention 3 is described.

Figure 22 is the profilograph that expression relates to the air conditioner inside of embodiment of the present invention 3; Figure 23 is the stereogram of the cowling panel 19 of Figure 22.In these figure, to giving identical Reference numeral and omit its explanation to the identical part of embodiment shown in Figure 41 with Fig. 1.

Embodiment 3 replaces forming rectification part 1g on top board side insulation 1e in embodiment shown in Figure 14 2, have the shape suitable with rectification part 1g and have cowling panel 19 with rectification part 1g said function but change freely to be equipped with, other structure is the same with embodiment 2.Cowling panel 19 is made of sheet-metal component or plastic member etc., and top board side insulation 1e or framework top board 1b etc. fix in modes such as screw thread are fixing relatively.

According to such structure, can receive the action effect same with embodiment 1 and embodiment 2, simultaneously owing to can change cowling panel 19, so, when the specification part difference of structure members such as heat exchanger 6 or filter 14 but flowing resistance when changing, only by changing cowling panel 19, just the throughput of the gap E2 of mainboard 3b and cowling panel 19 can be adjusted to the flow that is suitable for its machine.

Cowling panel 19 is the same with the situation of above-mentioned rectification part 1g, is not limited to illustrated shape, also can form as shown in Figure 24.

This example represents to make the side 1h of cowling panel 19 to constitute the situation of the tilted shape of circular cone shape.Even in this case, owing to contact at side 1h line with mainboard 3b at least, concentrate so can avoid the stress that impacts generation to mainboard 3b, can prevent the breakage of turbofan 3.In addition, if set E1/D1=0.3～0.7 as mentioned above, the ceiling embedded air conditioner that then can obtain having both the cooling effect of motor 4 and reduce the effect of noise.

Embodiment 4

Below, the ceiling embedded air conditioner in the embodiment 4 that the present invention relates to Figure 25 to Figure 32 explanation.

Figure 25 is the profilograph that expression relates to the ceiling embedded air conditioner inside of embodiment of the present invention 4, is the Y-Y line profile of Figure 26; Figure 26 is the Z-Z line profile of Figure 25; Figure 27 be Figure 25 to the top board outside drawing of looking S; Figure 28 is near the partial enlarged drawing the turbofan 3 of Figure 25; Figure 29 is the V-V line sectional stereogram of Figure 26; Figure 30 is the part section side view of motor 4; Figure 31 is arranged on the schematic diagram that substrate is used in motor 4 interior drivings; Figure 32 is the test experience result's of the motor table surface temperature of position relation of the radiation configuration wind-guiding road 1k of the corresponding Figure 25 of expression and turbofan 3 and level of noise figure.In these figure, to giving identical Reference numeral and omit its explanation to the identical part of embodiment shown in Figure 41 with Fig. 1.

Embodiment 4 is provided with many reinforcement 1i on the framework top board 1b of as shown in Figure 1 embodiment 1, improved the intensity of framework top board 1b, in addition, with the top board side insulation 1ea formation that is arranged on the framework top board 1b wind-guiding road 1k is disposed in the radiation of air-flow C2 steerable motor 4 with reinforcement 1i, improved the cooling effectiveness of motor 4.

In the area inside of the heat exchanger 6 of reinforcement 1i in being equivalent to framework top board 1b, from the outer peripheral portion in motor 4 opposed zones along framework side plate 1a direction be radial and to body interior side-prominent be formed with a plurality of.On the medial surface of framework top board 1b that has formed such reinforcement 1i and framework side plate 1a, dispose integral body and be the roughly insulation 1ca of case shape, constitute the wind path wall.Insulation 1ca by along framework top board 1b inner face part or all top board side insulation 1ea with constitute with above-mentioned the same side plate side insulation 1d.The top board side insulation 1ea of present embodiment 4 has a feature, and the shape to top board side insulation 1ea is elaborated below.

Top board side insulation 1ea makes part or all along framework top board 1b the inside, but is that a part along framework top board 1b forms in this example.That is on framework top board 1b,, be that benchmark forms top board side insulation 1ea along whole raised face 1ia, with its raised face 1ia (with reference to Figure 29) to the side-prominent formation reinforcement of body interior 1i.And, a plurality of radiation configuring areas of giving prominence in the more lateral of this raised face 1ia (promptly, in framework top board 1b, being clipped in the delta-shaped region (zone that a director is poroid) between the adjacent reinforcement 1i) among the 1ib, top board side insulation 1ea is along outstanding formation of a part (many places) radiation configuring area 1ib.In this example, as shown in figure 26, form along four radiation configuring area 1ib, other parts not edge are radiated configuring area 1ib but are formed flat condition.Thereby as Figure 26 and shown in Figure 29, the radiation configuring area 1ib except that described four radiation configuring area 1ib becomes the hidden state with the flat covering of top board side insulation 1ea.

According to the top board side insulation 1ea of such formation, be formed with the radiation configuration wind-guiding road 1k bigger than the clearance gap of reinforcement 1i and turbofan mainboard 3b with the clearance distance of turbofan mainboard 3b corresponding to the part of radiating configuring area 1ib (with reference to Figure 29).

Then, with reference to Figure 30 and Figure 31 to describing as the structure of the motor 4 of cooling object and the installation of motor 4.

Motor 4 is to be installed in the structure of the framework top board side (side opposite with turbofan) of motor inside with dress substrate 4h in the motor of drive circuit 4d and control circuit 4e has been installed, and is made of the DC motor particularly.In the inside of motor 4, in motor, be fixed with rotor 4g on dress substrate 4h, the rotating shaft 4a, around rotor 4g, dispose the stator 4f that forms by coil and iron core etc.Stator 4f is integrally molded with moulding material 4k, and configuration rotor 4g in the hollow bulb that described stator 4f forms simultaneously, rotates with the end of described hollow bulb and the bearing 4i that is pressed into carriage 4L and freely to keep rotor 4g, thus formation DC motor.In addition, the shaping of plastics magnetic material is constituted cylindrical rotor 4g, have the magnetic field of the N and the S utmost point in its periphery.

And then dress substrate 4h is equipped with in the motor: carry out the magnetic field detection of rotor 4g, the Hall element 4j of generation tach signal; Receive the control circuit 4e of tach signal, reception and registration rotary speed instruction voltage; Control the drive circuit 4d in the magnetic field of stator 4f by the energising of rotary speed instruction voltage.And in motor, on the drive circuit 4d of dress substrate 4h dynamical element 4M is housed, contact with carriage 4L via insulation board, heat radiation silicone.

Afterwards, the electric component case 24 interior electric substrates 25 of dress substrate 4h by distribution and Figure 25 are connected in the motor.On electric substrate 25, AC/DC transformation component 25a and control circuit power supply 25b is housed as shown in figure 31.This AC/DC transformation component 25a is with voltage (ex200V) conversion of AC power supplies 26 and boost into dc voltage and make power supply be supplied to drive circuit 4d, and this control circuit is the power supply of control circuit 4e with power supply 25b.

When the motor 4 that constitutes like this turned round, the heating temp of dynamical element 4M became than the other parts height such as coil of stator 4f, transmitted via heat radiation silicone heat, and the temperature of the side 4c of the framework top board side of the temperature of carriage 4L and motor 4 uprises.Therefore, when the side 4c of the framework top board side that can not make carriage 4L and motor 4 heat radiation, dynamical element 4M is damaged owing to generate heat, and motor 4 breaks down.That is to say, in order to prevent the fault of motor 4, must the main side 4c that cools off the framework top board side of carriage 4L and motor.

In addition, another example as motor 4, during DC motor on the electric substrate 25 that makes the electric component case 24 that drive circuit 4d and control circuit 4e is contained in the motor outside, in motor 4, the stator 4f the highest from temperature makes rotating shaft 4a heating by heat conduction, the lubricating oil of bearing 4i is because high temperature and deterioration, and bearing 4i sintering stops, and breaks down.That is, at this moment, in order to prevent the fault of motor 4, mainly the suitable 4P of portion of the bearing on cooling motor surface (with reference to Figure 28) reaches the carriage 4L that is connected with bearing 4i.The suitable 4P of portion of bearing is meant the part of the outer contour surface of the bearing 4i that is equivalent to motor 4.

Secondly, to describing by the cooling effect that the motor 4 that radiates configuration wind-guiding road 1k generation is set.

The part of each the radiation configuration wind-guiding road 1k of formation that forms at top board side insulation 1ea upper edge radiation configuring area 1ib, to compare clearance distance E1 bigger with other parts (that is, overlap with the raised face 1ia of reinforcement 1i and form the part of flat condition).Therefore, the flow in the time of can making a part of C2 of the discharge currents of turbofan 3 be drawn towards motor 4 increases, and flow velocity is risen.Like this, just can improve the cooling effect of motor 4.

In addition, between mainboard 3b and top board side insulation 1ea, be drawn towards the air-flow C2 of motor 4 directions while rotating, as shown in figure 29, owing to contact with the side 1ka of radiation configuration wind-guiding road 1k, and then towards motor 4 break-ins, so the carriage 4L above the framework top board side of the side 4c of framework top board side that can cooling motor 4 and motor 4.

At this, the top board side insulation 1ea that this is routine only make along framework top board 1b respectively radiate among the configuring area 1ib part radiation configuring area 1ib rather than along all radiation configuring area 1ib, be because the cause that may cause noise to strengthen during along all radiation configuring area 1ib.

In addition, as shown in figure 28, the air C2 that the gap E1 by mainboard 3b and top board side insulation 1ea flows into motor-side wind path 3f flows through after around the motor 4, discharges to the inner wind path 3e of fan from open pore 3d.At this moment, because the suitable 4P of portion of bearing on motor surface is crossed in circulation of air, thus can the suitable 4P of portion of cooling bearing, motor 4 can be cooled off fully, can prevent breakage.And since can be in this wise abundant cooling motor 4, can make turbofan 3 turn to the limit design temperature of dynamical element 4M.Thus, can increase air output, improve the heat exchange of heat exchanger 6.And then, owing to can reduce the internal circuit loss of dynamical element 4M, can improve moyor, saving energy.

Secondly, the radiation configuration wind-guiding road 1k that the high cooling effect that can receive motor 4 and noise are reduced effect and the position relation of turbofan 3 are set forth.

When interior all end 1kb of radiation configuration wind-guiding road 1k leave motor 4, be difficult to side 4c or carriage 4L steering current to the framework top board side of motor 4, can not fully cool off.And if the outer circumference end 1kc of radiation configuration wind-guiding road 1k compares the periphery words too in the outer part of turbofan 3, be not only by gap E1 and flow to the air-flow C2 of motor-side wind path 3f, the also direct side 1ka impact of discharge currents C1 self in addition, cause the noise increase to radiation configuration wind-guiding road 1k.In addition, if discharge currents C1 directly disposes the side 1ka impact of wind-guiding road 1k and makes 4 break-ins of air flow motor to radiation, then many to the inflow quantitative change of motor 4 sides, otherwise the influx of heat exchanger 6 reduces, so in order to improve heat-exchange capacity, must increase air quantity, the result causes noise to worsen.

In view of the foregoing, to receiving cooling and reducing the interior week end 1kb of radiation configuration wind-guiding road 1k of noise double effects and the optimum position scope of outer circumference end 1kc is studied.

Figure 32 (a) be expression radiation configuration wind-guiding road 1k interior week end 1kb the position and move the identical time after the surface temperature T1 of carriage 4L of the framework top board side that is configured in motor 4 between the figure of relation.The figure of the relation when Figure 32 (b) is the position of outer circumference end 1kc of expression radiation configuration wind-guiding road 1k and identical air quantity between the level of noise SPL1; Figure 32 (c) be the outer circumference end 1kc position of expression radiation configuration wind-guiding road 1k and move the identical time after the surface temperature T1 of carriage 4L of the framework top board side that is configured in motor 4 between the figure of relation.

The external diameter of supposing turbofan 3 is that the distance of the outer circumference end 1kc of the 4ac of rotating shaft center of L1, motor 4 and radiation configuration wind-guiding road 1k is that the distance of the interior week end 1kb of the 4ac of rotating shaft center of L0, motor 4 and radiation configuration wind-guiding road 1k is when being L2, as long as shown in Figure 32 (a), satisfy the relation of 0≤L2≤0.3 * L1, then (L2=0.5 * L1) compare, fully cooling motor 4 when radiation configuration wind-guiding road 1k is not set.This is considered to because can to guarantee to radiate the area of side 1ka of configuration wind-guiding road 1k bigger, the cause that the air mass flow to motor 4 is increased.

In addition, shown in Figure 32 (b), so long as L0≤0.6 * L1, level of noise does not just roughly worsen.And shown in Figure 32 (c), so long as 0.5 * L1≤L0, i.e. the outer circumference end 1kc of radiation configuration wind-guiding road 1k is than the more outer portion of mainboard 3b of turbofan, and then motor 4 just can be sufficiently cooled.

Like this,, become the scope of 0.5 * L1≤L0≤0.6 * L1 and 0≤L2≤0.3 * L1, just can obtain abundant cooling motor 4, level of noise and also not worsen and high-quality ceiling embedded air conditioner by size design.

As mentioned above, according to present embodiment 4, because reinforcement 1i is formed to body interior at framework top board 1b side-prominently, can gain in strength so can not strengthen the height dimension of body, thus, framework top board 1b can attenuation, can realize lightweight.In addition, formed to have by the top board side insulation 1ea that is located at framework top board 1b the inside side and made the radiation configuration wind-guiding road 1k of air-flow C2,, thereby prevented the motor breakage so cooling motor 4 effectively to motor 4 break-in functions.

Because the inside side at framework top board 1b is provided with insulation (top board side insulation 1ea), so, even when cooling operation, turn cold, under the state that body interior atmosphere gas also cools off at heat exchanger 6, be provided with the high occasion of humiture in the ceiling of air conditioner body 1, also can prevent dewfall on the surface of framework top board 1b, do not have dew to drippages such as the floors in room and make the unfavorable condition of its pollution, can keep floor cleaning in the same old way and use.

In addition, by making the design of satisfying 0.5 * L1≤L0≤0.6 * L1 and 0≤L2≤0.3 * L1, the cooling effectiveness of the motor 4 that can be improved simultaneously and suppress effect that level of noise worsens, can prevent motor 4 because heating and damaged and can realize low noiseization and high-quality ceiling embedded air conditioner.

In addition, because being housed, dress substrate 4h in the motor of drive circuit 4d and control circuit 4e is stored inside at motor 4, so, with in electric component case 24, deposit drive circuit 4d and compare with the situation of control circuit 4e, electric component case 24 is diminished, can bell hole 5 of partial blockade and body suction wind path 11.Like this, can reduce flowing resistance and prevent to suck bias current, can realize low noiseization.

If the height and position on top (surface of the carriage 4L of motor 4) of the framework top board 1b side of motor 4 more leans on the words of below (turbofan 3 sides) than the height and position on the top board side insulation 1ea surface of the dotted line among Figure 28, then can form the space near carriage 4L, air-flow C2 flow into carriage 4L easily.Thereby, can further improve cooling effect, the result can be improved moyor, save the ceiling embedded air conditioner of the excellence of energy.

Embodiment 5

Below, the ceiling embedded air conditioner of embodiment of the present invention 5 is described with Figure 33 to Figure 35.

Figure 33, Figure 34 are illustrated in the example of reinforcement 1i when the body exterior direction is outstanding that makes radial configuration in the embodiment 4.Figure 33 is the figure that sees framework top board 1b from top board side insulation 1eb side.The Y-Y line profilograph of Figure 33 is the shape roughly the same with Figure 28.Figure 34 is the outward appearance plane of framework top board 1b; Figure 35 is the sectional stereogram of the V-V line of Figure 33.In these figure, to Fig. 1 to embodiment 1 shown in Figure 4 and Figure 25 to embodiment shown in Figure 32 4 identical parts give identical Reference numeral and omit its explanation.

It is not to the body interior direction but outstanding to the body exterior direction that embodiment 5 makes in the embodiment 4 the reinforcement 1i of radiation configuration.Be formed with such form the insulation 1cb of whole roughly case shape and constitute the wind path wall to the framework top board 1b of the outstanding reinforcement 1i in outside and the inside side configuration of framework side plate 1a.Insulation 1cb by along framework top board 1b inner face part or all top board side insulation 1ea with constitute with above-mentioned the same side plate side insulation 1d.The top board side insulation 1eb of present embodiment 5 has a feature, and the shape to top board side insulation 1eb is elaborated below.

1eb is the same with embodiment 4 for top board side insulation, is not along whole framework top board 1b, but forms along the part of framework top board 1b.That is, on framework top board 1b, reinforcement 1i is to the side-prominent formation of body exterior as shown in figure 34, and forming part face 1ic (with reference to Figure 35) in addition with reinforcement 1i is benchmark, forms top board side insulation 1eb along whole 1ic.And top board side insulation 1eb is along forming than a part (having only several places) reinforcement 1i is outstanding among the more outstanding a plurality of reinforcement 1i of this face 1ic.This is for example shown in Figure 33, forms along four reinforcement 1i, and other part is not along reinforcement 1i but be flat condition and form.Thereby as shown in figure 33, the reinforcement 1i beyond described four reinforcement 1i is by the hidden state of flat covering becoming of top board side insulation 1eb.

In the insulation 1eb that constitutes like this, the part that forms along reinforcement 1i and be not the part that flat condition forms along reinforcement 1i and compare forms with the big radiation of the clearance distance of turbofan mainboard 3b and disposes wind-guiding road 1k '.

By such formation, the situation that radiation configuration wind-guiding road 1k is set with embodiment 4 is the same, because but intensity increases and lightweight, can be by radiation configuration wind-guiding road 1k ' with a part of C2 of the discharge currents of turbofan 3 to motor 4 wind-guidings, the side 4c and the carriage 4L of the framework top board side of cooling motor 4 effectively.

In addition, the air that the gap E1 by mainboard 3b and top board side insulation 1eb flow into motor-side wind path 3f flow through motor 4 around after, discharge to the inner wind path 3e of fan from open pore 3d.At this moment, because the suitable 4P of portion of the bearing that flows through the motor surface of air, so but the suitable 4P of portion of cooling bearing can make fully cooling and prevent breakage of motor 4.In addition, because can abundant like this cooling motor 4, so can make fan 3 turn to the limit design temperature of dynamical element 4M.Thus, can increase air output, improve the heat exchange performance of heat exchanger 6.And then, owing to can reduce the home loop loss of dynamical element 4M,, save energy so can improve moyor.

In addition, because the inside side of framework top board 1b covers with top board side insulation 1eb,, can obtain high-quality ceiling embedded air conditioner so, also can prevent dewfall even the portion of air of being cooled off by heat exchanger 6 flows into to motor 4.

In above-mentioned embodiment 4, the effect that the size that satisfies 0.5 * L1≤L0≤0.6 * L1 and 0≤L2≤0.3 * L1 by design obtains cooling motor 4 and reduction noise is illustrated, but present embodiment 5 also has same effect according to Figure 32.

Claims

1. ceiling embedded air conditioner comprises:

(a) has the ceiling embedded air conditioner body of framework top board;

(b) motor, it is arranged in the described ceiling embedded air conditioner body in the rotating shaft mode vertical with described framework top board;

(c) turbofan, it has: the lining that is protruding shape downwards that covers the rotating shaft of this motor and fixing described motor; Extend, be equipped with the mainboard of many pieces of blades around the upper open face of this lining opposed to each other at face with the opposition side of opposed of described framework top board with top board; Opposed and constitute the shell of the guiding stream of described blade with this mainboard; Wherein, this turbofan makes from described shell-side inhaled air and discharges via the inner wind path of fan that the opposition side in the motor-side of described lining forms;

(d) wind scooper, it is located at the motor-side of described lining, and described motor between form the motor-side wind path, will flow into the described motor of air guide of described motor-side wind path from the gap that forms between described framework top board and the described mainboard;

It is characterized in that, described wind scooper has from the week that described mainboard side extends facial downwards, this, height and position of lower ending opening of face was positioned at than the rear surface of the described motor position of below more in week, described lining has a plurality of open pores that air is flowed out to the inner wind path of described fan, and this air is to flow into described motor-side wind path from described gap and flow out the back from the lower ending opening of described wind scooper and flow into air the gap of described wind scooper and described lining.

2. ceiling embedded air conditioner as claimed in claim 1 is characterized in that, in described lining, forms a plurality of described open pores near described mainboard.

3. ceiling embedded air conditioner as claimed in claim 1 or 2 is characterized in that, described all faces of described wind scooper form, along with the area of section towards the described motor-side wind path of described lower ending opening diminishes.

4. as each described ceiling embedded air conditioner in the claim 1 to 3, it is characterized in that the described circumferential surface sections of described lining and described wind scooper does not form circular cone shape and forms roughly the same inclination.

5. as each described ceiling embedded air conditioner in the claim 1 to 3, it is characterized in that all faces of described wind scooper have along the cylindric portion of the outer peripheral face of described motor.

6. as each described ceiling embedded air conditioner in the claim 1 to 5, it is characterized in that, the minimum clearance of setting described wind scooper and described motor lower end at interval k, the outlet area G5 of described turbofan, described wind scooper and described lining minimum clearance at interval E2 circular opening area G1, and during the total aperture area G4 of described open pore, guarantee that the pass between each structure division is, described minimum clearance k at interval is more than the 8mm and below the 25mm, G4/G1 is more than 40%, and then G4/G5 is more than 0.5% and below 10%.

7. as each described ceiling embedded air conditioner in the claim 1 to 6, it is characterized in that described wind scooper is made of the high hardware of heat conductivity, and fixing in the mode of one rotation with described turbofan.

8. ceiling embedded air conditioner as claimed in claim 7 is characterized in that, described hardware is aluminium or electroplating steel plate.

9. as each described ceiling embedded air conditioner in the claim 1 to 8, it is characterized in that, be provided with rectification part in the gap between described framework top board and described mainboard suitable zone of opposed fan mainboard and described mainboard, this rectification part forms along with towards the center position of described mainboard and shorten the gap with described mainboard.

10. ceiling embedded air conditioner as claimed in claim 9, it is characterized in that, the side of described rectification part forms, when the described turbofan of occasion such as conveying contact with described rectification part for a spot wobble with the fixed part of described lining and described motor axis of rotation, the inclination that do not contact with the outer peripheral edges point of turbofan.

11. ceiling embedded air conditioner as claimed in claim 10, it is characterized in that, described rectification part forms, when the described turbofan of occasion such as conveying contacts with described rectification part for a spot wobble with the fixed part of described lining and described motor axis of rotation, carry out the polygon that line contact or face contact.

12. ceiling embedded air conditioner as claimed in claim 10, it is characterized in that, described rectification part forms, when the described turbofan of occasion such as conveying contacts with described rectification part for a spot wobble with the fixed part of described lining and described motor axis of rotation, carry out the circular cone shape that line contacts.

13. as each described ceiling embedded air conditioner in the claim 9 to 12, it is characterized in that, be provided with the top board side insulation of the inboard wind path that constitutes described framework top board at the described mainboard side of described framework top board, described rectification part is integrally formed by described top board side insulation.

14., it is characterized in that described rectification part constitutes by the suitable area part distortion of fan mainboard that makes described framework top board as each described ceiling embedded air conditioner in the claim 9 to 12.

15., it is characterized in that described rectification part is to be fixed on cowling panel on the described framework top board to change mode freely directly or indirectly as each described ceiling embedded air conditioner in the claim 9 to 12.

16. as each described ceiling embedded air conditioner in the claim 9 to 15, it is characterized in that the minimum clearance E1 between described rectification part and described mainboard and the ratio E1/D1 of the clearance D 1 of the short transverse of described top board side insulation and described mainboard form 0.3～0.7.

17. a ceiling embedded air conditioner comprises:

(a) has the ceiling embedded air conditioner body of framework top board;

(b) be arranged on the turbofan that described ceiling embedded air conditioner body interior is blown;

(c) motor, it is arranged in the described ceiling embedded air conditioner body in the rotating shaft mode vertical with described framework top board, drives described turbofan;

(d) with the upright heat exchanger that is provided with of the mode of surrounding described turbofan;

(e) a plurality of reinforcements, these a plurality of reinforcements are being equivalent to be radial from the outer peripheral portion with the opposed zone of described motor and form to body interior side-prominently in the described heat exchanger area inside in described framework top board;

(f) be arranged on the top board insulation of described framework top board inboard;

It is characterized in that the roughly whole raised face along described each reinforcement of described top board side insulation forms, and form in part or all the mode of respectively radiating configuring area beyond each reinforcement of described framework top board,

By the part that forms along described radiation configuring area, the wind-guiding road is disposed in the lead radiation of described motor of the part of the discharge air-flow that formation will be discharged from turbofan.

18. a ceiling embedded air conditioner comprises:

(a) has the ceiling embedded air conditioner body of framework top board;

(c) motor of the described turbofan of driving;

(e) a plurality of reinforcements, these a plurality of reinforcements are being equivalent to be radial from the outer peripheral portion with the opposed zone of described motor and form to body exterior side-prominently in the described heat exchanger area inside in described framework top board;

(f) be arranged on the top board side insulation of described framework top board inboard;

It is characterized in that the roughly whole face beyond described each reinforcement of described top board side insulation forms, and along part or all formation of described each reinforcement part of described framework top board,

By the part that partly forms along described each reinforcement, the lead radiation configuration wind-guiding road of described motor of the part of the discharge air-flow that formation will be discharged from turbofan.

19. as claim 17 or 18 described ceiling embedded air conditioners, it is characterized in that, when the diameter that to set distance from the rotating shaft center of described motor to the outer circumference end on radiation configuration wind-guiding road be L0, distance from the rotating shaft center of described motor to the interior Zhou Duan on radiation configuration wind-guiding road is L2, turbofan is L1, form the scope of 0.5 * L1≤L0≤0.6 * L1 and 0≤L2≤0.3 * L1.

20., it is characterized in that described motor is adorned substrate in inside accommodates the motor that drive circuit and control circuit have been installed as each described ceiling embedded air conditioner in the claim 17 to 19.

21., it is characterized in that, dispose described motor, so that the height and position of the framework top board side end face of described motor is positioned at the below of the height and position on top board side insulation surface as each described ceiling embedded air conditioner in the claim 17 to 20.